<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div{
            font:50px/2 'Times New Roman',time;
        }
        /* font-weight  normal
                        bold 加粗
                        100-900九个级别（没什么用） */
        /* font-style normal 
                      italic */
    </style>
</head>
<body>
    
</body>
</html>